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Official data from INPI

DISPOSITIVO E PROCESSO PARA DESALOJAR UM DEPOSITO ADERENTE DA AREA AQUECIDA DE UM TROCADOR DE CALOR OU SEMELHANTE

ConcedidaInvention Patent

Application data

Number

PI8205624

Type

Invention Patent

Filing

12/29/1981

Publication

08/30/1983

Progress at the INPI

  1. Filing12/29/81
  2. Publication08/30/83
  3. Examination12/13/83
  4. Allowance12/26/84
  5. Grant06/25/85
  6. Terminated01/03/95

The patent was granted on 06/25/1985 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

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Latest action published by the INPI: 06/25/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

BABCOCK & WILCOX CO [US]

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Inventors

H. W. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

06/25/1985

RPI 766

Notificação para pagamento de retribuição

#13.1

04/16/1985

RPI 756

Deferimento

#9.1

12/26/1984

RPI 740

Solicitação de exame técnico

#4.1

12/13/1983

RPI 686

Publicação do pedido de patente

#3.1

08/30/1983

RPI 671

Pedido de patente depositado

#2.1

11/16/1982

RPI 630

Anuidade - prazo legal encerrado

#18.2

01/03/1995

RPI 1257

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